Results 41 to 50 of about 2,589,646 (347)

Ultralow noise miniature external cavity semiconductor laser

open access: yesNature Communications, 2015
Advanced applications in optical metrology demand improved lasers with high spectral purity, in form factors that are small and insensitive to environmental perturbations.
W. Liang   +6 more
semanticscholar   +1 more source

Directional lasing in resonant semiconductor nanoantenna arrays [PDF]

open access: yesNature Nanotechnology, 2018
High-index dielectric and semiconductor nanoparticles supporting strong electric and magnetic resonances have drawn significant attention in recent years.
S. Ha   +6 more
semanticscholar   +1 more source

Efficacy of laser preionization with a semiconductor source and propene addition [PDF]

open access: yes, 1984
It is established that propene is an effective additive instabilising uv preionised CO2 TEA laser discharges: its effect being particularly pronounced with semiconductor-edge preionised lasers where the preionisation levels are shown to be ...
Scott, S.J., Smith, A.L.S.
core   +1 more source

Laser Radiation Induces Growth and Lipid Accumulation in the Seawater Microalga Chlorella pacifica

open access: yesEnergies, 2017
The impacts of laser radiation (Nd: YAG laser, 1064 nm at 800 mW, He–Ne laser 808 nm at 6 W, semiconductor laser 632.8 nm at 40 mW) on growth and lipid accumulation of Chlorella pacifica were investigated in this study.
Haonan Zhang   +9 more
doaj   +1 more source

Dynamics of Multisection Semiconductor Lasers

open access: yesJournal of Mathematical Sciences, 2004
We investigate the longitudinal dynamics of multisection semiconductor lasers based on a model, where a hyperbolic system of partial differential equations is nonlinearly coupled with a system of ordinary differential equations. We present analytic results for that system: global existence and uniqueness of the initial‐boundary value problem, and ...
Sieber, J.   +2 more
openaire   +5 more sources

A Numerical Simulation of Nanodisk Semiconductor-Plasmonic Laser Using BOR-FDTD With a Multilevel Gain Medium Model

open access: yesIEEE Photonics Journal, 2012
A temporal and spatial simulation and design of nanoplasmonic laser based on a semiconductor nanodisk is presented in this paper. A body-of-revolution finite-difference-time-domain (BOR-FDTD) simulation incorporated with a semiclassical multilevel model ...
Qian Wang, Seng Tiong Ho
doaj   +1 more source

Mid-infrared III–V semiconductor lasers epitaxially grown on Si substrates

open access: yesLight: Science & Applications, 2022
There is currently much activity toward the integration of mid-infrared semiconductor lasers on Si substrates for developing a variety of smart, compact, sensors based on Si-photonics integrated circuits.
É. Tournié   +8 more
semanticscholar   +1 more source

One- and two-photon pumped organic semiconductor lasers [PDF]

open access: yes, 2010
This thesis describes a number of studies on organic semiconductors focused around using them as gain media for lasers. The photophysical properties of organic semiconductors are studied using a wide range of experimental techniques, allowing the ...
Tsiminis, Georgios
core   +1 more source

Structural Design and Experimental Investigation of a 1.65 µm Tapered Semiconductor Laser with InGaAlAs MQWs (On InP)

open access: yesPhotonics
This paper presents the design and fabrication of a 1.65 μm tapered semiconductor laser based on an InGaAlAs multiple quantum well structure (grown) on InP.
Yuan Feng   +7 more
doaj   +1 more source

SILICON SURFACE MICROSTRUCTURING BY SINGLE-EXPOSURE FEMTOSECOND DOUBLE LASER PULSE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper evaluates the possibility of periodic microstructures formation on the silicon surface by single-exposure double femtosecond laser pulse. Method.
E. V. Kuzmin   +3 more
doaj   +1 more source

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